schemadiff: RelatedForeignKeyTables()

[shlomi-noach]

Description

The SchemaDiff result now supplies an RelatedForeignKeyTables() function that lists all foreign key tables that are either explicitly or implicitly affected by the diff. This means:

• Tables that are directly created, altered, dropped by the change, and have foreign key constraints
• Tables that are referencing a table that is created, altered, dropped by the change
• Tables that are referenced by a created, altered, dropped table in the change

Related Issue(s)

• schemadiff: tracking issue #10203

Checklist

• "Backport to:" labels have been added if this change should be back-ported to release branches
• If this change is to be back-ported to previous releases, a justification is included in the PR description
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on CI?
• Documentation was added or is not required

Deployment Notes

[vitess-bot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.56%. Comparing base (673e0d3) to head (7a6ec26).
Report is 81 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #18195      +/-   ##
==========================================
+ Coverage   67.54%   67.56%   +0.01%     
==========================================
  Files        1601     1601              
  Lines      261484   261502      +18     
==========================================
+ Hits       176612   176674      +62     
+ Misses      84872    84828      -44     

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[github-actions]

This PR is being marked as stale because it has been open for 30 days with no activity. To rectify, you may do any of the following:

• Push additional commits to the associated branch.
• Remove the stale label.
• Add a comment indicating why it is not stale.

If no action is taken within 7 days, this PR will be closed.

[github-actions]

This PR is being marked as stale because it has been open for 30 days with no activity. To rectify, you may do any of the following:

• Push additional commits to the associated branch.
• Remove the stale label.
• Add a comment indicating why it is not stale.

If no action is taken within 7 days, this PR will be closed.